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Resubmissions

04/07/2024, 13:03

240704-qaf1tsxckj 10

04/07/2024, 12:47

240704-p1mqmaxbjr 10

Analysis

  • max time kernel
    98s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    04/07/2024, 12:47

General

  • Target

    SolaraB/Solara/solarabootstrapper.exe

  • Size

    227KB

  • MD5

    ebf1358b8496d5c895f4b8f9298f7f96

  • SHA1

    f0136d66bf877934376858064344c2038b998fd4

  • SHA256

    bccba62c31f689715d01f4e80edbe2fe6a816edb571c4a409fccbe2d5b789b65

  • SHA512

    ca82e5838c7e8b292f46e5b20684b7fbb861f449678fc6283bd5c587c0958c069800e94c9f65b239609434564a394f8ca168d83d40bc27c96ade6c18744beb6d

  • SSDEEP

    6144:eloZMLrIkd8g+EtXHkv/iD46E6TjpaC9sop7mGz3/b8e1mZJi:IoZ0L+EP86E6TjpaC9sop7mGzLt

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SolaraB\Solara\solarabootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SolaraB\Solara\solarabootstrapper.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2524
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2560
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef70d9758,0x7fef70d9768,0x7fef70d9778
      2⤵
        PID:2532
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1156 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:2
        2⤵
          PID:2916
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1416 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:8
          2⤵
            PID:2132
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1612 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:8
            2⤵
              PID:2924
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2340 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:1
              2⤵
                PID:1988
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2352 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:1
                2⤵
                  PID:2304
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1484 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:2
                  2⤵
                    PID:984
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3224 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:1
                    2⤵
                      PID:2264
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3628 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:8
                      2⤵
                        PID:1900
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=3756 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:1
                        2⤵
                          PID:3064
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=2512 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:8
                          2⤵
                            PID:1004
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3692 --field-trial-handle=1224,i,13088579099793530204,9785414170068516879,131072 /prefetch:8
                            2⤵
                              PID:2000
                          • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                            "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                            1⤵
                              PID:764
                            • C:\Windows\explorer.exe
                              "C:\Windows\explorer.exe"
                              1⤵
                                PID:1532

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

                                Filesize

                                70KB

                                MD5

                                49aebf8cbd62d92ac215b2923fb1b9f5

                                SHA1

                                1723be06719828dda65ad804298d0431f6aff976

                                SHA256

                                b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                                SHA512

                                bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                              • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                                Filesize

                                342B

                                MD5

                                d8f70daaabe584ac27d2eb0d01aea85b

                                SHA1

                                ebe4ef549e466cb0442349545b67ea8131ec327f

                                SHA256

                                00c8e608f976fa3b1bdb21a9e6e757a1a63eb270586389b671b9ca489f1dd48f

                                SHA512

                                787ccf95953800f0d39d7fbf7e4d1dec7c0f6ca09f30b1d23bd5d395cbf2d16f93f1a1137103f721a9e8a00a821025f2b785778d43486d61cee6223225d8b9bb

                              • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                                Filesize

                                342B

                                MD5

                                7147391a27f4544bc727865aaf8f2210

                                SHA1

                                0f4f7c37b1c4b5f25df3f4106706517877d59328

                                SHA256

                                417713bea5cef3920f7f0fd8f36319befd12af238dfaf9e3cda722bd4d280132

                                SHA512

                                bac759c4bdedf9b9ef6ca99fae060aeb5a0c8c35f93a239f60045c8c68be9feff7c1ce36638a39112b1bce793d36d12a2ab216b530d1cc330c64dea09670d506

                              • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                                Filesize

                                342B

                                MD5

                                551c2356de5b55c0b4757f3b86d82231

                                SHA1

                                d6acc1059bad1e64786e0d580944e27f65442b39

                                SHA256

                                e5129805a10e1f07f63c1b9d448c17095a43aafd04ec9922da9a8959772baf5c

                                SHA512

                                7155ca20d00eda9a25d25195d83916a0d5d427f0f06210e8280f58f64889db1f93e45f1e045fb8ddf53b1af975513d1b0234caf58eb1edb5512a835dc0a0f9ad

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\4b12f572-fa4f-4a18-b192-4b45b433fadc.tmp

                                Filesize

                                6KB

                                MD5

                                3644327f29940a95e4a8748867324721

                                SHA1

                                da393a1e5e272b3eb8babeae4ccbd533cb840a20

                                SHA256

                                9d39d378c5d1a8892337511f7ae20110ca73cb3440cbd01d3ad111635947cd6a

                                SHA512

                                ddde3ad033750cac56149c93c60f274712839ec3699df04f563d83087bc5a35349f2069c830d8018581d98e30e9e67593c1ecbe3834498e84ebc54b8af96d0e4

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\Encryption\000006.dbtmp

                                Filesize

                                16B

                                MD5

                                aefd77f47fb84fae5ea194496b44c67a

                                SHA1

                                dcfbb6a5b8d05662c4858664f81693bb7f803b82

                                SHA256

                                4166bf17b2da789b0d0cc5c74203041d98005f5d4ef88c27e8281e00148cd611

                                SHA512

                                b733d502138821948267a8b27401d7c0751e590e1298fda1428e663ccd02f55d0d2446ff4bc265bdcdc61f952d13c01524a5341bc86afc3c2cde1d8589b2e1c3

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                                Filesize

                                264KB

                                MD5

                                f50f89a0a91564d0b8a211f8921aa7de

                                SHA1

                                112403a17dd69d5b9018b8cede023cb3b54eab7d

                                SHA256

                                b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                SHA512

                                bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                                Filesize

                                2KB

                                MD5

                                5f3fda9b2d8f9f6719e3daf89720e6d7

                                SHA1

                                4e9055b1fcd5d7f079a01613a734f26f6bf25347

                                SHA256

                                b0b1b80c9fd0d1f7da4896e78b7cec34a75d68e366ed00c199bfe7cd47839717

                                SHA512

                                697ecb6274f1dcad8501baf07faf49c396f09f65e46c3ab2ea7626fa6050d5f9e5d1b42e1a892145dbf2508af83d8824835aca4c8e5f539e92ac4d56758bee8f

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                Filesize

                                1013B

                                MD5

                                b39cd0bdebfc6a2c6d72ddef57187c3d

                                SHA1

                                5b34816271badd9707e6c1f3747a80d40c1679e4

                                SHA256

                                944200b5d155dd35470b41e980e17400d69c5754f5a539e7c4327061ffc2fd7b

                                SHA512

                                9a0aa76e4b206d14bd022ba20a2a9b64d589d0e47a7372ada8001f8c12deb56475c5f23ae4f81229dc3ac13c1b8abe911d2cfd1082fcffaa76a5a6ea61894fc7

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                Filesize

                                1KB

                                MD5

                                e385b1d2ceab2bba1bcb8f84aa5b18d6

                                SHA1

                                a8b34d3047a6f5193dca100bffe6ebe9bc7e43db

                                SHA256

                                55920f50595021066eb15404fdadad5fc2cb88fb77caf5f3b062775978ea3b1c

                                SHA512

                                49c7863b20112bd89ae0c62d566bc4b16da06fefd8aa65fcc409dbd368264cc01f77657c5451996a86c157d9c42ef73a6c2f922efa20b00ed43013abf0963ce3

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                Filesize

                                6KB

                                MD5

                                d3bf49e0b10ed207baadf68213d94713

                                SHA1

                                ef0c1fef9c8b4d6924c0b4ac1c1098143e6c280e

                                SHA256

                                c45c4bd24d3da9e75b6e6877a22ec5f32d1b0f33b9520c156f4521163762ed59

                                SHA512

                                5fb60505d8b28b1c2f65cdec7ae7499c2f830d653acbbc0de2359176a2811b3a0c8572506efa7a4ff4e0325a314d3890901e467d3c809414538b46fccc6aca63

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                                Filesize

                                16B

                                MD5

                                18e723571b00fb1694a3bad6c78e4054

                                SHA1

                                afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                SHA256

                                8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                SHA512

                                43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\c6962442-abb0-4d07-8583-70c68f45f2e0.tmp

                                Filesize

                                5KB

                                MD5

                                dc0e51b91ca74b46edfb379b8c47e936

                                SHA1

                                49265d8b45cbb916d104ba6bf0b0e3a37723adc4

                                SHA256

                                872be5f7ad7eee095b827fd76be5904c8bc2d572a863e24843849d71a96c1c5d

                                SHA512

                                1f6eaa8d30e7c45520ff0f63a18e39ca2f6133dc59cb09c0fe65cbbc106227ca58e24f4a6ff76270e7c9718ef2f1a3ae57a2891b0637cbe681496511b5f155f8

                              • C:\Users\Admin\AppData\Local\Temp\Tar483E.tmp

                                Filesize

                                181KB

                                MD5

                                4ea6026cf93ec6338144661bf1202cd1

                                SHA1

                                a1dec9044f750ad887935a01430bf49322fbdcb7

                                SHA256

                                8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                                SHA512

                                6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

                              • memory/1640-0-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

                                Filesize

                                4KB

                              • memory/1640-1-0x0000000000B00000-0x0000000000B40000-memory.dmp

                                Filesize

                                256KB

                              • memory/1640-2-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

                                Filesize

                                9.9MB

                              • memory/1640-3-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

                                Filesize

                                9.9MB